Dynamic Door Sealing

TPV market is primarily in automotive sealing where TPVs are displacing EPDM in less demanding (e.g., static) molded window seals. However, compression set remains an issue in more demanding (e.g., dynamic) applications such as door seals. TPVs are also increasingly used in overmolding on engineering plastics to achieve soft-touch tactile feel to the molded parts. 

TPV is often used for dynamic seals for doors, seals in glass run channels, O-ring seals, and CVJ boots. Self-bonding TPV grades eliminate the need for adhesive primers for overmolding to thermoplastic substrates including nylon. High-flow Santoprene TPV seals are overmolded to encapsulate rear quarter windows. 

Ligon Brothers and Lear Develop Quad-Extruded Dynamic Seal with Santoprene TPV (Door Seal), Advanced Elastomer Systems. 

Nearly all of the dynamically vulcanized EPDM/PP blend s (Santoprene ) growth has been at the expense of thermosetting rubbers due to the blend s easy melt processability and recyclability. Much of this growth has been in automotive applications such as rack and pinion steering boots, seat belt sleeves, and air ducts. EPDM/PP blend has also been used in window and door glazing seals, weather stripping and extrusion applications in the electricaE electronic industry. 

The designed nominal power output of the magnetron was 750 W, and the actual measured output was 400 W. The turntable and the motor were connected by a shaft which was dynamically sealed. The structure and dimension of the window for the microwaves to pass was careftilly designed in order to avoid any electrical discharge due to lower pressure. The door was sealed by a... 

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